Installation-first approach and ZERO pressure on-site consultation – Guaranteed!
Window Replacement in Lakewood & Denver, CO
Get a price on new windows before anyone comes to your house. Answer a few questions for an installed price range in about 2 minutes, then book a free in-home measure and get one written quote, good for 30 days.
Rather talk? Call (303) 900-8828
How window replacement pricing works
Know your budget before anyone comes to your door.
See a price online
Answer a few questions about your windows and doors and see an installed price range in about 2 minutes, from your phone.
We measure, you compare
A free in-home visit to measure every opening and show you how the options compare. Want a brand recommendation? Just ask.
One written quote
One clear price in writing, good for 30 days. No today-only discount. Take the time you need.
Online prices are ballpark estimates. Your final price depends on size, configuration and finishes, confirmed at your in-home measure.
Replacement windows and door installation
Everything on the outside of your home that lets light in, installed to manufacturer requirements for Colorado weather.
Window replacement
Energy-efficient replacement windows from five major brands, installed by experienced crews.
See window replacement
Entry & patio doors
Entry, patio and specialty door replacement installed to manufacturer specs.
See door installationHail or storm damage? We document it and work with your insurance carrier →
Buying windows shouldn’t feel like a timeshare pitch
Plenty of Denver homeowners have sat through the long presentation, the “manager’s special” that expires tonight and the price that drops the moment they hesitate. We built our process to be the opposite: we educate, we measure, and we let you decide.
The typical high-pressure visit
- Hours of pitch before you see a number
- A sign-today discount that vanishes tomorrow
- One brand: the one they sell
- A price that moves when you push back
How we do it
- Your ballpark price online, before we ever visit
- One written quote, good for 30 days. Sign when you’re ready
- Five brands compared; a recommendation only if you ask
- The same honest price today or next month
Window installation methods: full-frame, retrofit and high-performance
The best window still fails if it’s installed wrong. Here is how each method works and when it fits your home.
Full-frame installation
Proper flashing, air sealing and water management around the whole opening.
Full-frame installation →Retrofit (insert) windows
Keeps your existing frame and trim. A fit for some homes, not all.
Retrofit installation →High-performance installation
Better air sealing, comfort and efficiency, built to manufacturer requirements.
High-performance installation →We install all five major window and door brands
We’re not tied to one manufacturer, so we recommend what fits your home and budget, not what’s on the truck.

Upfront from the first visit to the final walkthrough
You should know what you are paying for before anyone steps through your door. That means a ballpark price online, one clear written quote, and straight answers about every option.
We measure every opening and recommend a brand only if you ask. Then the decision is yours.
John Best, Owner · in the window business since 1998
What Denver-area homeowners say about our window installs
“They were easy to work with, kept me informed throughout the project, and the finished work looks great.”
“Him and his team are highly professional. They are such a pleasure to work with and I would highly recommend them!”
“Great company with friendly, knowledgeable people! Professional, reliable, and easy to work with.”
Window and door replacement across the Denver metro
Based in Lakewood, serving homeowners across Denver and the Front Range.
Financing for window replacement
Monthly payment options through Regions Home Improvement Financing, subject to credit approval. Pre-qualifying is a soft credit check.
Window replacement questions, answered
How much does window replacement cost in Denver?
It depends on the number of windows, their size and style, the brand and the installation method. Get a ballpark installed price online in about 2 minutes, then we measure every opening at your free in-home visit and give you one written quote, good for 30 days.
What’s the difference between full-frame and retrofit windows?
Retrofit (insert) windows keep your existing frame and trim. Full-frame installation addresses the whole opening, with proper flashing, air sealing and water management. We explain which fits your home when we measure. See full-frame and retrofit installation.
Which window brands do you install?
Marvin, Pella, Andersen, Milgard and Anlin. We’re not tied to one manufacturer, and we recommend a brand only if you ask. Compare the brands.
Is the in-home consultation really no pressure?
Yes. We measure, show you how the options compare and give you one written price. There’s no today-only discount, so you can take the time you need.
Can you help with hail or storm damage and my insurance claim?
We document the damage to your windows or doors and work with your insurance carrier. Learn more about insurance restoration.
Do you offer financing?
Yes, through Regions Home Improvement Financing, subject to credit approval. Pre-qualifying is a soft credit check. See the financing options.
Is there a warranty on the installation?
Yes. Every install comes with our 3-year workmanship guarantee.
What areas do you serve?
We’re based in Lakewood and serve Denver, Arvada, Golden, Westminster, Thornton, Boulder, Longmont, Centennial and Highlands Ranch. See our service areas.